<html>
<head>
	<title>bt3</title>
	<meta charset="utf8">
<body>
	<?php
	$namHienTai = date("Y");
	?>
	<select>
		<?php
		for ($i = $namHienTai; $i >= 1900; $i--)
		{
			?>
			<option> <?php echo $i; ?> </option>
			<?php
		}
		?>
	</select>
</body>
</html>